Cargo handling pallet

Abstract

A cargo pallet has a framework including a plurality of beams that are each formed of a square hollow body of paperboard treated for water resistance and water repellency. Each beam is engaged at a predetermined distance with and adhered to a pair of channel-shaped bent edge members of paperboard material faced to each other. Strip-like boards are placed in parallel to each other on both the front and back faces of the beams with a gap provided between adjacent strip-like boards in a direction perpendicular to the beam length and adhered to the beams. Each of the strip-like boards is formed with a pattern paper treated for water resistance and water repellency that covers all of the periphery of front and back faces of an inner core member of thick paperboard. Fork insertion openings are provided in the edge members having paperboard reinforcing layers.

Description

TECHNICAL FIELD[0001]This invention relates to a pallet made of paperboard used for storing cargoes or loading and unloading them.BACKGROUND OF THE INVENTION[0002]A pallet has been broadly used for storing cargoes in factories or in physical distribution industries or for effectively conveying cargoes in collection and delivery business. Such a pallet has been of dual plug type in which two forks of a forklift truck or stacker can be inserted into the pallet and has been mainly made of wood or metal. A flat pallet has a size of 1100×1100 mm and is specified as JISZ060 and called TII type.[0003]There has been also a pallet made of resin, but the resin pallet has a high weight and an expensive cost and therefore it is hard to distribute it. Thus, the resin pallet has been used just in some fields in which water is used and there has been mainly used the wooden or metallic pallet as aforementioned. However, the wooden pallet is remarkably broken so as to be split due to knots, bending ...

AI Technical Summary

Benefits of technology

[0007]In view of such technical problems, this invention provides a cargo handling (loading and unloading) pallet of paperboard material adapted to be more easily manufactured and constructed and to have lightweight, high strength, water resistance, humidity resistance and durability and is suitable for recycling so as to be protective to earth environment whereby it is safe and economically useful.

Problems solved by technology

There has been also a pallet made of resin, but the resin pallet has a high weight and an expensive cost and therefore it is hard to distribute it.

However, the wooden pallet is remarkably broken so as to be split due to knots, bending or twisting of wood because most wood used might be of imported wood or of fraction material of lumber and therefore it has been disposed of after it was reciprocally used two or three times. Accordingly, the wooden pallet is undesirable in view of natural resources and in view of cost and not suitable for recycling.

The metallic pallet is advantageous in strength, but undesirable for cost.

In addition thereto, both of the wooden and metallic pallets have weight and therefore inconvenient for handling.

Furthermore, the board material having a larger area is required for forming the two square hollow bodies from a sheet of paperboard and many board materials are required for forming many reinforcement boards, which causes the high manufacture cost of the beam material.

Especially, the beam material having the construction in which many reinforcement boards are inserted within the space has an increased weight and in addition thereto, a complicated construction.

Thus, it can never be expected that the beam material has a lightweight turned due to its complicated construction.

This disadvantageously causes the weight of the pallet to never get lower and also the cost thereof to be higher.

In addition thereto, the pallet is required to have strength and rigidity maintained because pallet portions where the fork insertion openings are provided tend to be deformed or damaged due to a larger concentrated load applied to such pallet portions when the pallet is supplied by inserting the fork into the respective insertion openings.

However, the conventional pallets of paperboard have not taken into consideration of these requirements and therefore they have been broken at an early stage and have had poor durability.

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